Slides in this set

Slide 1

Slide 2

Bonds Breaking Needs energy in (Activation energy) Bonds Making Gives energy If more energy is need to break then out make = endothermic If more energy is in making rather than breaking it is exothermic http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/chemreac/energychangesrev1.shtmlhttp://www.nationalstemcentre.org.uk/elibrary/resource/5515/how-science-works-clip-bank-energetic-reactionsAnimation of Exothermic reactionhttp://www.footprints-science.co.uk/flash/activation2.swfrecall that exothermic reactions are accompanied by an increase intemperature and endothermic reactions by a decrease in temperaturedefine an exothermic reaction as one in which heat energy is given outand an endothermic reaction as one which heat energy is taken in andgive examples of such reactionsrecall that the breaking of bonds is endothermic and that the making ofbonds is exothermic…read more

Slide 3

http://www.epa.gov/apti/bces/module1/kinetics/animation/kani1/kani102.htmhttp://www.kscience.co.uk/animations/collision.htmhttp://www.ewellcastle.co.uk/science/pages/kinetics.htmlhttp://www.southaxholme.doncaster.sch.uk/subjects/animations/showcase%20page%206/collision%20theory.swfdescribe and explain the effect of changes in temperature,concentration and surface area of a solid on a given rate of reaction Video on Collision Theory http://www.bbc.co.explain that reactions can occur when particles collide and uk/learningzone/clips/collisithat increasing the frequency and energy of collisions on-theory-and-rates-of-increases the rate of the reaction reaction/10668.html…read more

Slide 4

Do own rates thio experimenthttp://www.kscience.co.uk/animations/thio.swfData logging Animationhttp://www.kscience.co.uk/animations/thio_ict.htm describe experiments to investigate the effect of temperature,concentration and surface area of a solid on the rate of a reaction Youtube video Experiment (data-logging equipment may be used here) http://www.youtube.com/watch?v=CH8gH7xKCxQ…read more

Slide 5

Digestive Enzyme Videohttp://www.bbc.co.uk/learningzone/clips/digestive-enzymes/10649.htmlUse of Enzymehttp://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/enzymes/enzymes_and_digestion4.shtmlhttp://www.teachersdomain.org/resource/biotpd.pd.sci.provactivity/Catalystshttp://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway_pre_2011/rocks_metals/7_faster_slower5.shtmlrecall that enzymes are biological catalysts and appreciate theimportance of controlling the speed of chemical reactions for themaintenance of lifedescribe the effect of a catalyst on the rate of reaction, andinterpret the results…read more

Slide 6

This sign means it is reversible reaction and thus can go both ways It is an exothermic reaction so if you have a low temperature the system will try to raise the temperature and thus make ammoniaBitesize Haber Processhttp://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/chemreac/energychangesrev2.shtmlVideo of Haber Processhttp://www.bbc.co.uk/learningzone/clips/formation-of-ammonia-in-the-haber-process/4432.html 4moles of gas goes to 2 moles of ammonia anddescribe the conditions under which ammonia is produced from nitrogen thus if you increase the pressure the systemand hydrogen in the Haber process will make ammonia to reduce the pressuredemonstrate understanding that this reaction is reversible and can reach adynamic equilibrium To improve the yield but keepdemonstrate understanding of how the position of a dynamicequilibrium can be affected by changes of temperature and pressure, energy down the process usesto include the Haber process as an example a catalystdemonstrate understanding of the consequential effect of thesechanges on the rate of attainment of equilibrium and the possibleneed to use a catalyst…read more